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| Paper: |
beta Cephei and SPB stars in the Large Magellanic Cloud |
| Volume: |
310, Variable Stars in the Local Group (IAU Colloquium 193) |
| Page: |
225 |
| Authors: |
Kolaczkowski, Z.; Pigulski, A.; Soszynski, I.; Udalski, A.; Szymanski, M.; Kubiak, M.; Zebrun, K.; Pietrzynski, G.; Wozniak, P. R.; Szewczyk, O.; Wyrzykowski, L.; OGLE Team, the |
| Abstract: |
This is a progress report of the study of pulsating main-sequence stars in the LMC. Using the OGLE-II photometry supplemented by the MACHO photometry, we find 64 β Cephei stars in the LMC. Their periods are generally much longer than observed in the stars of this type in the Galaxy (the median value is 0.27 d compared with the 0.17 d in the Galaxy). In 20 stars with short periods attributable to the β Cephei-type instability, we also find modes with periods longer than ~0.4d. They are likely low-order g modes, which means that in these stars both kinds of variability, β Cephei and SPB, are observed. We also show examples of the multiperiodic SPB stars in the LMC, the first beyond our Galaxy. |
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